Enhancing Magnetic Light Emission with All-Dielectric Optical Nanoantennas

Electric and magnetic optical fields carry the same amount of energy. Nevertheless, the efficiency with which matter interacts with electric optical fields is commonly accepted to be at least 4 orders of magnitude higher than with magnetic optical fields. Here, we experimentally demonstrate that properly designed photonic nanoantennas can selectively manipulate the magnetic versus electric emission of luminescent nanocrystals. In particular, we show selective enhancement of magnetic emission from trivalent europium-doped nanoparticles in the vicinity of a nanoantenna tailored to exhibit a magnetic resonance. Specifically, by controlling the spatial coupling between emitters and an individual nanoresonator located at the edge of a near field optical scanning tip, we record with nanoscale precision local distributions of both magnetic and electric radiative local densities of states (LDOS). The map of the radiative LDOS reveals the modification of both the magnetic and electric quantum environments induced by the presence of the nanoantenna. This manipulation and enhancement of magnetic light-matter interaction by means of nanoantennas opens up new possibilities for the research fields of opto-electronics, chiral optics, nonlinear&nano-optics, spintronics and metamaterials, amongst others.Peer ReviewedPostprint (author's final draft

The karst in the management plan of the Intervales State Park and buffer zone, State of São Paulo, Brazil

O Parque Estadual Intervales (PEI) e sua Zona de Amortecimento (ZA), inseridos nos vales dos rios Ribeira de Iguape e Paranapanema, situam-se em domínios de rochas carbonáticas proterozóicas de grande interesse para a mineração, onde se verifica a formação de carste com ocorrência expressiva de cavernas. A caracterização do carste no PEI e ZA para o plano de manejo foi baseada em estudos geológicos e geomorfológicos que permitiram definir o grau de vulnerabilidade à contaminação do aquífero cárstico. As regiões de maior vulnerabilidade do carste no PEI e ZA são aquelas que permitem a introdução direta de contaminantes no aquífero e se caracterizam pela presença de feições cársticas tais como cavernas e sumidouros. Para as regiões onde a recarga ocorre exclusivamente por infiltração difusa e o escoamento superficial converge para rios de superfície, foi associado grau de vulnerabilidade intermediário. Considerando essa análise, foram identificadas áreas com maior potencial para impactos e feitas recomendações para a gestão do parque e sua zona de amortecimento.Located in the valleys of the Ribeira de Iguape and Paranapanema Rivers, where karst features and a large number of caves can be found, the Intervales State Park and its buffer zone lie within an area of Proterozoic carbonate rocks that are of great interest to the mining industry. Based on geomorphological and geological studies, the characterization of the karst was performed in order to develop a management plan for the Intervales State Park and its buffer zone. With this, it was possible to define the degree of vulnerability of the karst aquifer to contamination. The areas of greatest vulnerability are those that facilitate injection of contaminants directly into the aquifer, being characterized by such karst features as caves and sinks. In regions where recharge occurs exclusively via diffuse infiltration, and runoff convergence with surface watercourses, the degree of vulnerability is lower. Considering this analysis, areas with the greatest impact potential were identified and recommendations made regarding management of the park and its buffer zone

High-resolution abundance analysis of red giants in the metal-poor bulge globular cluster HP~1

The globular cluster HP~1 is projected at only 3.33 degrees from the Galactic center. Together with its distance, this makes it one of the most central globular clusters in the Milky Way. It has a blue horizontal branch (BHB) and a metallicity of [Fe/H]~-1.0. This means that it probably is one of the oldest objects in the Galaxy. Abundance ratios can reveal the nucleosynthesis pattern of the first stars as well as the early chemical enrichment and early formation of stellar populations. High-resolution spectra obtained for six stars were analyzed to derive the abundances of the light elements C, N, O, Na, and Al, the alpha-elements Mg, Si, Ca, and Ti, and the heavy elements Sr, Y , Zr, Ba, La, and Eu.} High-resolution spectra of six red giants that are confirmed members of the bulge globular cluster HP~1 were obtained with the 8m VLT UT2-Kueyen telescope with the UVES spectrograph in FLAMES-UVES configuration. The spectroscopic parameter derivation was based on the excitation and ionization equilibrium of FeI and FeII. We confirm a mean metallicity of [Fe/H] = -1.06~0.10, by adding the two stars that were previously analyzed in HP~1. The alpha-elements O and Mg are enhanced by about +0.3<[O,Mg/Fe]<+0.5 dex, Si is moderately enhanced with +0.15<[Si/Fe]<+0.35dex, while Ca and Ti show lower values of -0.04<[Ca,Ti/Fe]<+0.28dex. The r-element Eu is also enhanced with [Eu/Fe]~+0.4, which together with O and Mg is indicative of early enrichment by type II supernovae. Na and Al are low, but it is unclear if Na-O are anticorrelated. The heavy elements are moderately enhanced, with -0.20<[La/Fe]<+0.43dex and 0.0<[Ba/Fe]<+0.75~dex, which is compatible with r-process formation. The spread in Y, Zr, Ba, and La abundances, on the other hand, appears to be compatible with the spinstar scenario or other additional mechanisms such as the weak r-process.Comment: 15 pages, 8 figures In press in Astronomy & Astrophysics (2016

Ozone saturation in a column containing peanut kernels and the effect on quality

Objetivou-se com este trabalho avaliar o processo de saturação do ozônio em coluna contendo amendoim e o efeito na qualidade de produto. Utilizaram-se grãos com teor de umidade em torno de 6,8% (b.u.), acondicionados em recipientes cilíndricos de PVC, com 1,10 m de altura e 15 cm de diâmetro. O gás, nas concentrações de 1,59 e 2,78 mg L–1, foi injetado na base da coluna e os valores adotados de altura da coluna de grãos foram de 0,25, 0,50 e 0,75 m. Determinaram-se os tempos e as concentrações de saturação e avaliou-se a qualidade dos grãos ozonizados. Para os grãos ozonizados na concentração de 1,59 mg L–1, obteve-se tempo de saturação na faixa entre 222 e 449 min. No que tange à relação CSat/C0, obtiveram-se valores entre 0,32 e 0,48. Com relação aos grãos submetidos à ozonização na concentração de 2,78 mg L–1, obteve-se tempo de saturação na faixa entre 78 e 251 min. No que se refere à relação CSat/C0, para a concentração inicial de 2,78 mg L–1, os valores permaneceram entre 0,46 e 0,81. É possível concluir, a partir dos resultados obtidos, que, à medida que se aumenta a altura da coluna de grãos de amendoim, há aumento do tempo de saturação e decréscimo da concentração de saturação. Não houve alteração na qualidade do produto durante o processo de ozonização.The objective of this study was to evaluate the ozone saturation process in a column containing peanuts and the effect on product quality. Peanuts with a moisture content of about 6.8% (w.b.) were used, packed in cylindrical PVC containers with 1.10 m in height and 15 cm in diameter. Ozone was injected into the base of the cylindrical column and the corresponding values adopted for the heights of the grain columns were 0.25, 0.50 and 0.75 m. The peanuts were ozonized at concentrations of 1.59 and 2.78 mg L–1, a temperature of 25 °C and a gas flow rate of 5.0 L min–1. The ozone saturation times and concentrations were determined and also the quality of the ozonized peanuts. For peanut kernels ozonated at a concentration of 1.59 mg L–1, saturation times ranging between 222 and 449 min were obtained. Regarding the CSat/C0 ratio, values ​​between 0.32 and 0.48 were obtained. For peanut kernels ozonated at a concentration of 2.78 mg L–1, saturation times between 78 and 251 min were obtained, and the CSat/C0 ratio for an initial concentration of 2.78 mg L-1 was between 0.46 and 0.81. It was concluded from the results that an increase in height of the peanut kernel column resulted in an increased saturation time and decreased saturation concentration. There was no change in product quality during the ozonation process

BUSTER: a "BUSiness Transaction Entity Recognition" dataset

Albeit Natural Language Processing has seen major breakthroughs in the last few years, transferring such advances into real-world business cases can be challenging. One of the reasons resides in the displacement between popular benchmarks and actual data. Lack of supervision, unbalanced classes, noisy data and long documents often affect real problems in vertical domains such as finance, law and health. To support industry-oriented research, we present BUSTER, a BUSiness Transaction Entity Recognition dataset. The dataset consists of 3779 manually annotated documents on financial transactions. We establish several baselines exploiting both general-purpose and domain-specific language models. The best performing model is also used to automatically annotate 6196 documents, which we release as an additional silver corpus to BUSTER.Comment: The 2023 Conference on Empirical Methods in Natural Language Processing (EMNLP 2023), Industry Trac

Multi-word Tokenization for Sequence Compression

Large Language Models have proven highly successful at modelling a variety of tasks. However, this comes at a steep computational cost that hinders wider industrial uptake. In this pa005 per, we present MWT: a Multi-Word Tokenizer that goes beyond word boundaries by representing frequent multi-word expressions as single tokens. MWTs produce a more compact and efficient tokenization that yields two benefits: (1) Increase in performance due to a greater coverage of input data given a fixed sequence length and budget; (2) Faster and lighter inference due to the ability to reduce the sequence length with negligible drops in performance. Our results show that MWT is more robust across shorter sequence lengths, thus allowing for major speedups via early sequence truncation

PENGGARAPAN TARI BARONGAN DI SANGGAR RIDWAN CINTA SENI DESA TODANAN KECAMATAN TODANAN KABUPATEN BLORA

Penelitian ini bertujuan untuk menganalisis bentuk pertunjukan tari Barongan dan penggarapan tari Barongan di Sanggar Ridwan Cinta Seni. Pertunjukan tari Barongan di Sanggar Ridwan Cinta Seni merupakan tari Barongan kelompok. Tari Barongan garapan Ridwan Arif Rosidi tidak menggunakan kain. Permasalahan penelitian ini mengenai bentuk tari Barongan di Sanggar Ridwan Cinta Seni dan penggarapan tari Barongan di Sanggar Ridwan Cinta Seni. Pembahasan mengenai bentuk menggunakan konsep bentuk Slamet MD. Dalam hal ini menyangkut gerak, irama, ekspresi atau rasa, kostum, tempat pentas, dan penari. Pembahasan mengenai penggarapan menggunakan konsep garap Rahayu Supanggah yang meliputi materi garap, penggarap, sarana garap, penentu garap, dan pertimbangan garap. Penelitian ini menggunakan pendekatan koreografi dengan deskriptif interpretatif yang digunakan adalah jenis penelitian kualitatif dengan teknik pengumpulan data observasi, wawancara, dan studi pustaka. Hasil dari penelitian ini menunjukkan bahwa bentuk tari Barongan oleh Ridwan Arif Rosidi merupakan pengembangan dari motif gerak dasar Barongan Blora. Konsep garap tari Barongan oleh Ridwan Arif Rosidi merupakan perwujudan Narasima. Irama musik pada tari Barongan menggunakan dinamika cepat. Busana model rompi dengan iket kepala. Penggarapan motif gerak tari Barongan oleh Ridwan Arif Rosidi meliputi gerak sirig, molet sirig, ngaklak nglombo, kosot, garuk gebyah, thatakan sembah jengkeng, jingukan, kucingan, sirig tatak dengan merubah volume, tempo, irama, dan kualitas gerak dengan menggunakan media topeng Barongan dengan tubuh terlihat menjadikan lebih lincah, gagah dan kuat

Novos registros de larvas e adultos do mexilhão-dourado (Limnoperna fortunei Dunker, 1857) invasor no Rio Ivaí (Paraná, Brasil)

Golden mussel is a freshwater bivalve native from South Asia, but introduced in South America. It is very aggressive, causing ecological and economic problems in invaded environments. Here, we presented new records of larvae and adults of golden mussel in the Ivaí River (Paraná, Brazil). We believe this finding is important mainly because (i) the Ivaí River basin is the second largest basin in the state of Paraná, (ii) Ivaí River is of great relevance to maintain regional freshwater biodiversity, and (iii) Ivaí River is one of the few tributaries free of dams of the Upper Paraná River. Consequently, due to its high conservation importance, records of the invasive golden mussel in Ivaí are worrisome. We recommend future studies about golden mussel distribution in Ivaí River to monitor and, if possible, minimize their spread.O mexilhão-dourado é um bivalve de água doce nativo do Sul da Ásia, mas introduzido na América do Sul. É muito agressivo, causando problemas ecológicos e econômicos nos locais invadidos. Aqui, apresentamos novos registros de larvas e adultos do mexilhão-dourado no rio Ivaí (Paraná, Brasil). Acreditamos que esta descoberta é importante principalmente porque (i) a bacia do rio Ivaí é a segunda maior bacia do estado do Paraná, (ii) o rio Ivaí é de grande relevância para manter a biodiversidade de água doce regional, e (iii) o rio Ivaí é um dos poucos afluentes livres de barragens do Alto Rio Paraná. Consequentemente, devido à sua importância para conservação, os registros desse bivalve invasor no rio Ivaí são preocupantes. Recomendamos estudos futuros sobre a distribuição do mexilhão-dourado no rio Ivaí para monitorar e, se possível, minimizar sua disseminação

Determinaçăo da influęncia do radomo no diagrama de radiaçăo de antena de Radar Meteorológico /

Orientador: Horácio Tertuliano FilhoDissertaçăo (mestrado) - Universidade Federal do Paraná, Setor de Tecnologia, Programa de Pós-Graduaçao em Engenharia Elétrica. Defesa: Curitiba, 2006Inclui bibliografia e anexoÁrea de concentraçăo: Sistemas de energi